gskeycheck with halo

omegga · **Joined:** 27 Jun 2008 10:22 **Posts:** 8

I tried to use gskeycheck with halo. And I didn't get it to work.

The problem seems to be the algorithm that calculates the md5 hash of the cd key. I tried to enter a valid cd key on different ways (with the "-", all capitals, etc) but none resulted in the correct hash. I got my real cd key hash by banning myself from my own server, since the server bans based on your cd key hash.

Basically I don't know how halo calculates the cd key hash. I'm guessing it's adding some salt value before hashing it. Did someone try this with halo? Anyone has more info on this?

aluigi · **Posted:** 19 Dec 2008 01:56

try to sniff the packets sent by your server to the master server and check their content for being sure of their format and moreover to know what is the hash derived by your cdkey.

I have a tool which catches these particular packets here: http://aluigi.org/papers.htm#gshsniff
anyway the "encoding" is a simple xoring with the word "gamespy"

the md5 function should be at offset 0061acb0 of halo.exe 1.0.8.616

ardnat · **Joined:** 10 Mar 2009 23:45 **Posts:** 1

alugi strikes again :)

Luigi Auriemma

gskeycheck with halo